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Protects against the suns ultraviolet rays
5/16 HT/BBB
When using AT-6030 adhesive it requires AT-12 (10 to 1 plunger)
Ignition protected—safe for installation aboard gasoline powered boats
Harken Aluminum Air Runner Block - 57mm Plumbing Protects against the suns ultravioletBlack Magic Air Runners are strong, lightweight blocks with extremely free rolling sheaves. Blocks feature Torlon roller bearings in a center cage for strength. Sideload bearing strips dampen rig vibration Integrated sideplate bails and recessed cotter key help produce a smooth design that won't snag lifelines Sideplates and sheaves Hard Lube anodized for maximum UV protection and a smooth surface. Center cage keeps Torlon roller bearings separated
